use axum::{
    extract::{Path, State},
    http::StatusCode,
    response::Json,
};
use fluviox_shared::models::*;
use serde::{Deserialize, Serialize};
use serde_json::{json, Value};
use std::sync::Arc;
use uuid::Uuid;
use crate::AppState;

#[derive(Debug, Deserialize)]
pub struct CreateConnectionRequest {
    pub name: String,
    pub description: Option<String>,
    pub source_id: Uuid,
    pub destination_id: Uuid,
    pub configuration: ConnectionConfig,
}

pub async fn list_connections(
    State(state): State<Arc<AppState>>,
) -> Result<Json<Vec<Connection>>, StatusCode> {
    match state.db.list_connections().await {
        Ok(connections) => Ok(Json(connections)),
        Err(_) => Err(StatusCode::INTERNAL_SERVER_ERROR),
    }
}

pub async fn create_connection(
    State(state): State<Arc<AppState>>,
    Json(request): Json<CreateConnectionRequest>,
) -> Result<Json<Connection>, StatusCode> {
    let connection = Connection {
        id: Uuid::new_v4(),
        name: request.name,
        description: request.description,
        source_id: request.source_id,
        destination_id: request.destination_id,
        configuration: request.configuration,
        status: ConnectionStatus::Paused,
        created_at: chrono::Utc::now(),
        updated_at: chrono::Utc::now(),
    };

    match state.db.create_connection(&connection).await {
        Ok(_) => Ok(Json(connection)),
        Err(_) => Err(StatusCode::INTERNAL_SERVER_ERROR),
    }
}

pub async fn get_connection(
    State(state): State<Arc<AppState>>,
    Path(id): Path<Uuid>,
) -> Result<Json<Connection>, StatusCode> {
    match state.db.get_connection(id).await {
        Ok(Some(connection)) => Ok(Json(connection)),
        Ok(None) => Err(StatusCode::NOT_FOUND),
        Err(_) => Err(StatusCode::INTERNAL_SERVER_ERROR),
    }
}

pub async fn update_connection(
    State(_state): State<Arc<AppState>>,
    Path(_id): Path<Uuid>,
    Json(_request): Json<Value>,
) -> Result<Json<Value>, StatusCode> {
    // TODO: 实现连接更新逻辑
    Ok(Json(json!({"message": "连接更新功能待实现"})))
}

pub async fn delete_connection(
    State(_state): State<Arc<AppState>>,
    Path(_id): Path<Uuid>,
) -> Result<Json<Value>, StatusCode> {
    // TODO: 实现连接删除逻辑
    Ok(Json(json!({"message": "连接删除功能待实现"})))
}

pub async fn start_connection(
    State(_state): State<Arc<AppState>>,
    Path(_id): Path<Uuid>,
) -> Result<Json<Value>, StatusCode> {
    // TODO: 实现连接启动逻辑
    Ok(Json(json!({
        "status": "success",
        "message": "连接已启动"
    })))
}

pub async fn stop_connection(
    State(_state): State<Arc<AppState>>,
    Path(_id): Path<Uuid>,
) -> Result<Json<Value>, StatusCode> {
    // TODO: 实现连接停止逻辑
    Ok(Json(json!({
        "status": "success", 
        "message": "连接已停止"
    })))
}
